Perhaps it’s fitting that a Supreme Court now deciding the largest affirmative action case in 50 years finally has two Black justices sitting on it.  One, Justice Clarence Thomas, has long made clear that he thinks the government must be colorblind when it approaches these questions. “I’ve heard the word ‘diversity’ quite a few times, and I don’t have a clue what it means,” the 74-year-old Republican-appointed justice prodded defenders of affirmative action during oral arguments this week. “It seems to mean everything for everyone.”  Thomas has it right.